How to choose a contract checker as a freelancer

There are many AI tools that read contracts now, and they differ in ways that matter more than the demo. Here are the questions to ask before you upload a client contract to any of them, ours included.

Updated 21 October 2026. General information, not legal advice.

Is it on your side?

1. Does it ask which side you are on?

The same clause is good for the client and bad for you. A tool that does not know whether you are doing the work or hiring someone can only describe the contract, not tell you what to push back on.

2. Does it show what is missing, not only what is there?

Many risky contracts are risky because of what they leave out: no deposit, no late fee, no limit on revisions, no cap on liability. A tool that only highlights existing clauses will miss these. See the red flags for typical gaps.

3. Does it tell you what to ask for?

Knowing a clause is bad is half the work. Useful output includes wording to propose and a short, polite message you can actually send to the client, in the language of the contract.

4. Does it say how much each point matters?

A list of twenty equal warnings is hard to act on. Look for a priority: what is worth fighting for, what is negotiable, what is standard and only worth knowing.

What happens to your contract

5. Is the file stored, and for how long?

A client contract contains names, prices, bank details and sometimes confidential terms. Read the privacy policy: is the file encrypted, deleted after the check, or kept? Is the full text stored, or only the findings?

6. Is it used to train AI models?

Look for a clear answer. Many tools use AI providers whose business terms exclude training on your data; the tool should say which provider it uses and what applies.

7. Are personal details hidden before the AI sees them?

Some tools replace emails, phone numbers and bank details with placeholders before sending the text to the AI model. It is a good sign, as long as the tool says plainly what it hides and what it does not.

Does it fit your work

8. Can it read your files and your languages?

Check PDF and Word support, whether it can read a scanned, signed copy, and whether it handles contracts in the languages you work in, with explanations in yours.

9. Can it compare two versions?

The riskiest moment is often when the client sends the contract back "with small edits". A comparison that shows what changed in the wording, and whether it works for or against you, saves reading both documents side by side.

10. Can it check against your own terms?

If you always want a deposit, 14-day payment and two revision rounds, a tool that remembers your terms and shows where a contract breaks them saves you from checking the same things by hand every time.

Price and honesty

11. What does one check really cost, and what does it promise?

• Work out the price per check, not per month. If you sign a few contracts a year, a monthly plan you forget to cancel is the expensive option; a free tier or a one-time pack may be enough.
• Be wary of claims like "100% accurate" or "replaces a lawyer". An AI tool can miss things, and an honest one says that it is not legal advice.
• Check what happens with a long contract: is all of it read, and does the tool tell you if it is not?

When to involve a lawyer anyway

For a large or long contract, exclusivity, transfer of a business, anything you would struggle to pay for if it went wrong, or a contract under a law you do not know: use a tool to prepare, then ask a lawyer where you or the client are based.

How SoloOps answers these questions

• You choose your side; every clause is judged from it, with a priority, suggested wording and a message for the client in the contract's language.
• Missing protections are listed separately from risky clauses.
• The file is encrypted in your browser and deleted after the check; your history keeps the findings and short quotes, not the contract. Email addresses, phone numbers, IBANs and card numbers we recognise are replaced with placeholders before the text reaches the AI (scans excepted).
• PDF and DOCX, scans up to 20 pages; explanations in English, German, Spanish, French or Russian.
• Version comparison and your own terms are built in.
• Free: 1 check a month. Pro: 15 checks for $19 a month. Or 5 checks for $9 once, valid for 12 months. Prices exclude tax.
• SoloOps is software, not a law firm, and the report is not legal advice.

Whatever you choose, ask these questions first. More in the contract checker overview.

This guide is general information, not legal advice. Rules differ between countries and states, and a clause that is common in one place can be unenforceable in another. For a high-stakes contract, ask a lawyer where you or your client are based.